Plants arborescent, trunks 1–3 (–4) m, frequently suckering; rosettes not cespitose, 10–15 × 15–20 dm. Leaves spreading to recurved, 70–100(–200) × 7–10 cm; blade green, without bud-prints, linear-lanceolate, rigid, adaxially concave toward apex, abaxially convex toward base; margins slightly wavy, armed, teeth single, 2–3 mm, 1–2 cm apart, often with some interstitial smaller teeth; apical spine dark brown, conical, 1–2 cm. Scape 3–5 m. Inflorescences paniculate, often bulbiferous; bracts caducous; lateral branches 10–18, ascending, comprising distal 1/2 of inflorescence, longer than 4 cm. Flowers 15 or more per cluster, erect, 6–8 cm; perianth greenish yellow, tube funnelform, 11–13 × 4–6 mm, limb lobes incurved, drying reflexed on tube, subequal, 18–22 mm; stamens long-exserted; filaments inserted on 2 levels at or slightly above mid perianth tube, erect, yellow, 4–5 cm; anthers yellow, 22–25 mm; ovary 4–5 cm, neck absent. Capsules short-pedicellate, ellipsoid to oblong, 3.5–5 cm, apex beaked. Seeds not seen. 2n = 120, 150, 160, 180, 190.
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A large plant. It has rings of leaves. The trunk is 2.5 m long. The leaves are 120 cm long. They are prickly.
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